Papilio palinurus, the emerald swallowtail, emerald peacock or green-banded peacock, is a butterfly of the genus Papilio belonging to the Papilionidae family. This species can be found primarily in South East Asia, particularly in Burma - Peninsular Malaysia, Sumatra, Borneo, Indonesia , Basilan, Island of Nias, Philippines . The iridescent green sheen of the bands of this butterfly is not produced by pigments, but is structural coloration produced by the microstructure of the wing scales. They refract the light and give rise to blue and yellow visible reflections, producing the perception of green color when additively mixed.